Question: Who did Fred Hollows marry on 1980-1-1?
Paraphrase: Who became Fred Hollows' spouse on 1980-1-1?
SPARQL (Wikidata): SELECT ?obj WHERE { wd:Q3086860 p:P26 ?s . ?s ps:P26 ?obj . ?s pq:P580 ?x filter(contains(YEAR(?x),'1980')) }